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World Income Components: Measuring And Exploiting International Risk Sharing Opportunities

  • Robert Shiller

We provide methods of decomposing the variance of world national incomes into components in such a way as to indicate the most important risk-sharing opportunities, and, therefore, the most important missing international risk markets to establish. One method uses a total variance reduction criterion, and identifies risk-sharing opportunities in terms of eigenvectors of a variance matrix of residuals produced when country incomes are regressed on world income. Another method uses a mean-variance utility-maximizing criterion and identifies risk-sharing opportunities in terms of eigenvectors of a variance matrix of deviations of country incomes from their respective contract-year shares of world income. The two methods are applied using Summers-Heston (1991) data on national incomes for large countries 1950-1990, each using two different methods of estimating variances. While these data are not sufficient to provide accurate estimates of the requisite variance matrices of (transformed) national incomes, the results are suggestive of important new markets that could actually be created, and show that there may be large welfare gains to creating some of these markets.

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Paper provided by Yale School of Management in its series Yale School of Management Working Papers with number ysm151.

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Date of creation: 28 Jul 2004
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Handle: RePEc:ysm:somwrk:ysm151
Contact details of provider: Web page: http://icf.som.yale.edu/

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  13. Robert J. Shiller, 1993. "Measuring Asset Values for Cash Settlement in Derivative Markets: Hedonic Repeated Measures indices and Perpetual Futures," NBER Technical Working Papers 0131, National Bureau of Economic Research, Inc.
  14. Sachs, Jeffrey & Sala-i-Martin, Xavier, 1992. "Fiscal Federalism and Optimum Currency Areas: Evidence for Europe from the United States," CEPR Discussion Papers 632, C.E.P.R. Discussion Papers.
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  18. Duffie Darrell & Rahi Rohit, 1995. "Financial Market Innovation and Security Design: An Introduction," Journal of Economic Theory, Elsevier, vol. 65(1), pages 1-42, February.
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